What were the reasons for the war between France and England?

In the 14th century, war broke out between England and France. The reason for this war was the claim of the English king to the French throne. In addition, there were also territorial disputes between states, since the British claimed part of the lands of France. Thus, a war broke out that lasted more than a century. She walked with varying degrees of success. There was a period when France was almost defeated. But in the end, England lost the war.